The National Survey of Child and Adolescent Well-Being found that for children in foster care the use of outpatient mental health services had what impact?
1) Statistically significant impact on internalizing behavior when paired with appropriate prescribed medications.
2) Greater likelihood of success with children who entered foster care before age 6 years.
3) No statistically significant impact on either externalizing or internalizing behavior problems.
4) Both a and b.